Island



(No Model.)

BOBBIN HOLDER FOR'SPINNING SPINDLES.

p U m. w m gm E .m M a W m U ii. u 6 d e .k m T .e t a P.

view of one of the holding-shoes.

UNiTE STATES PATENT OFFICE.

THOMAS J. MURDOOK AND JOSEPH T. ASH WORTH, OF IVOONSOOKET, RHODE ISLAND;SAID ASI-IYVORTH ASSIGNOR TO SAID MURDOCK.

BOBBlN-HOLDER FOR SP-INNING-SPiNDLES.

SPECIFICATION forming part of Letters Patent No. 455,857, dated July14:, 1891.

Application filed August 4, 1890. Serial No. 360,916- (N'o model.)

To all whom it-mcty concern:

Be it known that we, THOMAS J. MURDOCK and JOSEPH 'l. ASHWORTH, citizensof the United States, residing at \Voonsocket, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful Improvements in Bobbin-Holders for Spinning-Spindles; and we dohereby declare the following to be a full, clear, an d exact descriptionof the invention, such as will enable others skilled in the art. towhich it appertains to make and use the same, reference being bad to theaccompanying drawings, and to figures of reference marked thereon, whichform a part of this specification.

This invention relates to spindles of spinning or twisting mechanisms;and it consistsof a bobbin -holder to be mounted upon the spindle.

Our improvements consist in such an assemblage of parts, hereinafterfully described, that the bobbin is readily dotted; yet it is held sofirmly that sufficient friction is created to insure its properrevolution, while at the same time it is prevented from jumping orbecoming raised by the draft during high speed in the act of filling thebobbin.

Our improvement-s consist,furthermore, in creating a receptacle in theholder to contain the bobbin-head and thereby prevent the yarn fromoverlapping on the same.

The drawings represent, in Figure 1, a partial sectional elevation of aspindle and bobbin-holder embodying our invention. Fig. 2 is ahorizontal section. Fig. 3 is a perspective Fig. 4 is a View showing thespindle in cross-section and the bobbin-holder partly in section at theright-hand side thereof, with the spring and one shoe omitted to moreclearly show detail in construction. Fig. 5 is a view in side e1evationof the body of the bobbin-holder.

In the accompanying drawings wehave represented the spindle at 2, thewhirl at 3, and the bobbin at at, with its head at 5.

One object of our invention is to obviate the winding of yarn about thespindle in order to secure a proper fit of the bobbin on its seat on thespindle, this winding frequently being done in order to compensate forthe varying sizes of the bores of the bobbins, and likewise tocompensate for wear caused by replacing and dotfing the bobbin. To thisend we mount upon the spindle a bobbin-holder having a cylindrical bodyor casing 6, open at its upper side but closed at its bottom by the base8, and formed with two flanges 9 and 10,betwee1i which flanges is anannular recessed portion 12, the shape of the body being in general thatof a spool. The shell or, cylindrical part7of-5o the body is radiallyapertured at 13 to receive a series of segmental shoes or holders lat ofa curvature to conform to that of thebobbinhead. Said shoes are of asize to admit of movement radially in' the apertures, but are furnishedwith lips 15, which project beyond 'the ends of the apertures andcontact with the exterior surface of the recessed part of the holder. Acoiled spring 18, in the form of a ring, encircles the body of theholder and serves to press the shoes radially inward upon the head ofthe bobbin. These shoes extend within the holder so far that when thebobbin is in place the bobbin-head thrusts them outwardly against thepressure of the spring, and the latter is now the active agent to holdthe bobbin in place. Conversely when the bobbin is doifed the lips atthe ends of said shoes contact against the body of the holder andprevent them from moving inwardly beyond the proper distance, so thatthe bobbins when replaced can readily be thrust in between them.

. It is to be observed that the shoes are moved .radially toward acommon center, or toward the longitudinal axis of the spindle, while thespring presses equally upon all. As aresult the tendency is to centerthe bobbin upon the spindle and hold said bobbin steady, even though thelatter may be of larger bore than the size of the spindle requires.

To complete the bobbin-holder and have it present a finishedappearance,an inclosing shell or cover 17 is slipped over the holder proper. Saidcover rests upon and is sup- 5 ported at the top and bottom by theflanges 9 10. In this Way the annular spring is concealed, and theholder having a smooth external finish prevents the yarn, waste, orflyings from catching thereupon.

The operation is simply to grasp an empty bobbin, insert the latter overthe top of the spindle, and thrust it down until the head ofi the bobbinhas entered the holder. In this act the spring-actuated shoes are thrustout wardly against the spring, which now exerts its pressure to hold thebobbin firmly in place. WVhen the bobbin is to be doffed,a slight upwardpull disengages the shoes from the bobbin-head, and the shoes nowconverge until stopped by their lips 15.

There are several advantages derived from the improvements as abovedescribed: The bobbin-head is contained within the bobbinholder, andthus prevents yarn from winding about the head and obstructing orcovering the annular groove 16, ordinarily found in filling bobbins andwhich serves to receive a spring when placed in the shuttle. A furtheradvantage is that this bobbin-holder can be employed to suit diiferentbobbins simply by changing the shape of the shoes, no change in thebobbin-head being required. Consequently we do not desire to be limitedto any particular shape of shoe nor to the spring; but our inventionconsists in holding the bobbin-head by radially-moving shoes actuated bya spring or springs which tend to center said shoes toward thelongitudinal axis of the bobbin.

A further advantage in the employment of I elasticity of the spring,which thus permits the shoes to yield more or less, according to thesize of the bobbin-head.

What we claim is 1. The combination, with a spindle and a bobbin-holderbody affixed thereupon, of a spiral spring inclosing said bobbin-holder40 body, and radially-moving shoes or equivalents actuated by saidspring to grasp the bobbin, substantially as set forth and specified.

'2. The combination, with a spindle, of a 45 bobbin-holder having acylindrical rimmed receptacle, apertures in the body thereof, theiniperfora-te inclosing shell, and the spring actuated radially-movin gshoes secured within the bobbin-holder and which grasp thebobbin-head,substantially as and for the purposes specified. V

3. A revoluble spindle having a bobbinholder fast thereto and composedof a circular rimmed receptacle having an annularexterior groove andradial apertures and provided with an outer cover,,.a series ofholding-shoes having lips to determine the extent of their inwardmovement, and a spring medium which actuates said shoes to cause thelatter to grasp the bobbin-head, substantially as set forth.

In testimony whereof we affix our signatures in presence of twowitnesses.

THOMAS J. MURDOCK. JOSEPH 'l. ASl-IVVORTH.

Witnesses:

WALTER I. BALLOU, ERWIN J. FRANCE.

